Just follow steps below to install your IDM CC addons for all versions of Firefox 12 to 17 and enable it to download anything such as music, video, documents etc.
Step 1. First of all download idm CC from here. And extract this file in a folder for later use.
Step 2. Go to Add-ons page of your Firefox 12,13,14,15,16,17 web browser.
Step 3. Hit click on the gear button as shown in the picture given below. Then click on Install add-on from file…
Step 4. Now, choose the .XPI file that you downloaded by following step 1.
Step 5. Install Add-on now.
Step 6. If you follow all these steps sequencially, you may certainly have installed IDM CC Add-On for your all firefox Aurora versions. Now just restart your Firefox browser. You are done.
Step 7. Just start downloading and enjoy. I hope no issue will further come to you.
Then enjoy speed of idm…
The Technologist 
Thanks a lot..!!
All of my questions seatled-thtnks!
THANS FOR SOLUTION FOR IDM CC (ADDON)